What is an Egg Candler?
Egg candlers are devices used for testing eggs. Using the light from either LED or incandescent bulbs, egg candles help you check if an egg is viable or not while it is still incubating. Viable eggs are fertilized and will hatch to give birth to a chick. Egg candlers can also help in monitoring the growth of an embryo during its incubation and hence help pick out the best in the lot for hatching. The light from the bulb of the candle shines through the egg, the embryo being thicker looks darker than the yolk surrounding it and helps us see the stage of development of the egg.